• Dialect
• Irish English
• Linguistic Variation
• Regionalism
• Social Dialect

Examples and Observations:

• "There can be little doubt that the spread of features of new Dublin English has accelerated considerably in the past few years. . . .
  
  "Apparent time study of Dublin English shows that female speakers over 30 do not always, and those over 40 rarely, have the features which are so indicative of new Dublin English. In the recordings for A Sound Atlas of Irish English nearly all females under 25, whose self-image appeared to be one of urban modernity, showed the new pronunciation. . . . [W]e are dealing here with a fairly unified, structural realignment of the entire accent of southern Irish English and not just one or two minor changes in pronunciation."
  (Raymond Hickey, Dublin English: Evolution and Change. John Benjamins, 2005)

• "The changes in Dublin English involve both vowels and consonants. While the consonant changes seem to be individual changes, those in the area of vowels represent a coordinated shift which has affected several elements. . . . To all appearances this started about 20 years ago (mid 1980s) and has continued to move along a recognisable trajectory. In essence, the change involves a retraction of diphthongs with a low or back starting point and a raising of low back vowels. Specifically, it affects the diphthongs in the PRICE/PRIDE and CHOICE lexical sets and the monophthongs in the LOT and THOUGHT lexical sets. The vowel in the GOAT lexical set has also shifted, probably as a result of the other vowel movements."
  (Raymond Hickey, Irish English: History and Present-Day Forms. Cambridge Univ. Press, 2007)